WhatsApp does not officially distribute older builds, but reputable archives like or MacUpdate sometimes host version 2.2146.12 or earlier. Versions released before June 2022 (approx. 2.2145.x) still supported macOS 10.14 and 10.15.
If you are still running on your Mac, you are in a specific category of users. Catalina was a divisive operating system—it was the last version to support 32-bit apps, but it is now considered "legacy" by Apple. whatsapp web mac os 10.15.7
Do not use public Wi-Fi for WhatsApp Web on Catalina. The OS lacks the latest TLS and certificate patches. WhatsApp does not officially distribute older builds, but
This is the most straightforward method. It requires zero downloads and runs entirely within your existing web browser. whatsapp web mac os 10.15.7
The Ultimate Guide to Using WhatsApp Web on macOS 10.15.7 (Catalina)